What happens when resistivity is high?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
When resistivity is high:
- Current flow decreases for a given voltage (poor conductivity)
- Heat generation increases if current is forced through the material
- Material acts as an insulator, preventing unwanted current flow
- Energy loss occurs if used as a conductor
- Applications include: electrical insulation, protective barriers, resistive heating elements
High resistivity is desirable in insulators but problematic in wires and conductors where efficient current flow is needed.
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